Table 1 Measurement of variables

Dependent variable

Currently pregnant

Yes/no

Demographic characteristics

Age of teenage girl

Age in completed years

Place of residence

Rural/urban area

School attendance

Still in school or not

Parental educational level

No education, primary education, secondary education or post-secondary education

Parental occupation

Farmer, business, government/non-governmental organisation or others…

Parents alive

Father/mother alive or dead

Behavioural factors

Age at first sexual intercourse

Age in completed years

Multiple sexual partners

Having concurrent number of sexual partners

Frequency of sexual intercourse

Average number of sexual intercourse per week

Contraceptive use

Regular use of contraceptive methods during sexual intercourse – yes/no

Familial factors

Household socio-economic status

Ownership of households properties, categorized as; high socio-economic status, medium socio-economic status or low socio-economic status

Marital status

Currently married or not

Parental divorce/separation

Father/mother divorced/separated

Person teenage lived with

Father, mother, both parents, relative or husband

Domestic violence

Yes/no

Physical neglect

Yes/no

Social factors

Peer pressure

Yes/no

Sexual abuse

Yes/no

Control over sex

Yes/no

Awareness on adolescent sexual and reproductive health

Yes/no

Perception of cultural norm on sex before 18 years

Yes/no